JP2008146012A - Display device - Google Patents
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- JP2008146012A JP2008146012A JP2007149535A JP2007149535A JP2008146012A JP 2008146012 A JP2008146012 A JP 2008146012A JP 2007149535 A JP2007149535 A JP 2007149535A JP 2007149535 A JP2007149535 A JP 2007149535A JP 2008146012 A JP2008146012 A JP 2008146012A
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- circuit board
- display device
- printed circuit
- electromagnetic wave
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133314—Back frames
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133334—Electromagnetic shields
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Liquid Crystal (AREA)
Abstract
Description
本発明は表示装置に係わり、より詳しくは、電磁障害（ＥＬＥＣＴＲＯ−ＭＡＧＮＥＴＩＣ ＩＮＴＥＲＦＥＲＥＮＣＥ、ＥＭＩ）の発生を減らした表示装置に関する。 The present invention relates to a display device, and more particularly to a display device that reduces the occurrence of electromagnetic interference (ELECTRO-MAGNETIC INTERFERENCE, EMI).
表示装置にはいろいろな種類がある。そのうち、急速に発展している半導体技術を中心にして小型化および軽量化を進めながら性能がさらに向上した液晶表示（ｌｉｑｕｉｄ ｃｒｙｓｔａｌ ｄｉｓｐｌａｙａｙ、ＬＣＤ）パネルを備えた表示装置がある。 There are various types of display devices. Among them, there is a display device provided with a liquid crystal display (LCD) panel whose performance is further improved while advancing miniaturization and weight reduction centering on rapidly developing semiconductor technology.
液晶表示パネルを備えた表示装置は小型化、軽量化および低電力消費化などの利点を有していて、既存のブラウン管（ｃａｔｈｏｄｅ ｒａｙ ｔｕｂｅ、ＣＲＴ）の短所を克服できる代替手段として次第に注目されてきた。現在は表示装置を必要とする携帯電話機、ＰＤＡ（ｐｅｒｓｏｎａｌ ｄｉｇｉｔａｌ ａｓｓｉｓｔａｎｔ）、およびＰＭＰ（ｐｏｒｔａｂｌｅ ｍｕｌｔｉｍｅｄｉａ ｐｌａｙｅｒ）等のような小型製品だけではなく、中大型製品のモニターおよびＴＶなどにも使用されるなど表示装置を必要とする殆ど全ての情報処理機器に使用されている。 A display device including a liquid crystal display panel has advantages such as downsizing, weight reduction, and low power consumption, and is gradually attracting attention as an alternative means that can overcome the shortcomings of existing cathode ray tubes (CRTs). It was. Currently used not only for small products such as mobile phones, PDAs (personal digital assistants), and PMPs (portable multimedia players) that require display devices, but also for monitors and TVs for medium and large products. It is used in almost all information processing equipment that requires a device.
液晶表示パネルは自ら発光できない受光型表示パネルなので、表示装置は液晶表示パネルの背面に光を供給する光源ユニットを含むバックライトアセンブリーを備えている。 Since the liquid crystal display panel is a light receiving display panel that cannot emit light, the display device includes a backlight assembly including a light source unit that supplies light to the back surface of the liquid crystal display panel.
また、表示装置はいろいろな用途の印刷回路基板を含む。つまり、印刷回路基板は表示パネルに駆動信号を供給する駆動印刷回路基板と、光源ユニットを駆動するインバータ回路基板などを含む。 The display device also includes printed circuit boards for various applications. That is, the printed circuit board includes a drive printed circuit board that supplies a drive signal to the display panel, an inverter circuit board that drives the light source unit, and the like.
しかし、このような多様な印刷回路基板は電磁障害（ＥＬＥＣＴＲＯ−ＭＡＧＮＥＴＩＣ ＩＮＴＥＲＦＥＲＥＮＣＥ、ＥＭＩ）を発生させるという問題点がある。このように、印刷回路基板によって発生される電磁障害は表示装置の品質を低下させ、また他の不良を引き起こす原因にもなっている。
したがって、本発明は前述の問題点を解決するためのものであって、電磁障害（ＥＭＩ）の発生を減らすことができる表示装置を提供する。 Accordingly, the present invention is for solving the above-described problems, and provides a display device that can reduce the occurrence of electromagnetic interference (EMI).
前述の目的を達成するために本発明による表示装置は、画像を表示する表示パネルと、前記表示パネルを収納する収納部材と、前記収納部材の背面に設けられた一つ以上の印刷回路基板と、前記収納部材の背面と前記印刷回路基板との間に配置された電磁波遮断部材とを含み、前記電磁波遮断部材は電磁波を遮断させるための複数の突起を含む。 In order to achieve the above-mentioned object, a display device according to the present invention includes a display panel for displaying an image, a storage member for storing the display panel, and one or more printed circuit boards provided on the back surface of the storage member. An electromagnetic wave shielding member disposed between the back surface of the housing member and the printed circuit board, and the electromagnetic wave shielding member includes a plurality of protrusions for blocking electromagnetic waves.
前記印刷回路基板は、前記表示パネルに駆動信号を供給する駆動印刷回路基板を含むことができる。 The printed circuit board may include a driving printed circuit board that supplies a driving signal to the display panel.
前記印刷回路基板は、前記駆動印刷回路基板と接続された制御回路基板を含むことができる。 The printed circuit board may include a control circuit board connected to the driving printed circuit board.
前記収納部材に収納され、前記表示パネルに光を供給する光源ユニットをさらに含み、前記印刷回路基板は、前記光源ユニットを駆動するインバータ回路基板をさらに含むことができる。 The printed circuit board may further include an inverter circuit board that drives the light source unit. The light source unit is housed in the housing member and supplies light to the display panel.
前記収納部材と結合して前記印刷回路基板をカバーする基板カバーをさらに含み、前記基板カバーで前記印刷回路基板と対向する面に配置された電磁波遮断部材をさらに含むことができる。 The substrate cover may further include a substrate cover that covers the printed circuit board in combination with the housing member, and may further include an electromagnetic wave shielding member disposed on a surface of the substrate cover that faces the printed circuit board.
前記複数の突起は多角錐形状を含むことができる。 The plurality of protrusions may include a polygonal pyramid shape.
前記複数の突起はプリズム（ｐｒｉｓｍ）形状を含むことができる。 The plurality of protrusions may include a prism shape.
前記複数の突起は半球形状を含むことができる。 The plurality of protrusions may include a hemispherical shape.
前記複数の突起は縦断面が多角形形状を含むことができる。 The plurality of protrusions may include a polygonal shape in a longitudinal section.
前記複数の突起が有する縦断面の形状は凹多角形を含むことができる。 The shape of the longitudinal section of the plurality of protrusions may include a concave polygon.
前記複数の突起が有する縦断面の形状は凸多角形を含むことができる。 The shape of the longitudinal section of the plurality of protrusions may include a convex polygon.
前記複数の突起は縦断面がアーチ（ａｒｃｈ）形状を含むことができる。 The plurality of protrusions may have an arch shape in a longitudinal section.
前記複数の突起は０．１μｍ〜１０００μｍの範囲内の平均幅を有することができる。 The plurality of protrusions may have an average width within a range of 0.1 μm to 1000 μm.
前記電磁波遮断部材はアロエ（ａｌｏｅ）、木材、アルミニウム（Ａｌ）、合成樹脂のうちの一つ以上の素材を含んで形成されることができる。 The electromagnetic wave shielding member may include at least one material selected from aloe, wood, aluminum (Al), and synthetic resin.
前記電磁波遮断部材は前記収納部材と一体に形成されることができる。 The electromagnetic wave shielding member may be formed integrally with the storage member.
前記電磁波遮断部材は、前記収納部材および前記基板カバーのうちの一つ以上のものと一体に形成されることができる。 The electromagnetic wave shielding member may be integrally formed with one or more of the storage member and the substrate cover.
本発明によれば、表示装置は電磁障害（ＥＭＩ）の発生を減らすことができる。 According to the present invention, the display device can reduce the occurrence of electromagnetic interference (EMI).
つまり、駆動印刷回路基板、インバータ回路基板および制御回路基板を含む印刷回路基板のように電磁波を発生させる部品を、電磁波遮断部材で囲むことによって、ＥＭＩに影響を与える周波数を抑制することができる。 In other words, the frequency that affects the EMI can be suppressed by enclosing the component that generates an electromagnetic wave, such as the printed circuit board including the drive printed circuit board, the inverter circuit board, and the control circuit board, with the electromagnetic wave shielding member.
したがって、ＥＭＩの発生を抑制して、ＥＭＩ発生による表示装置の品質の低下および誤作動を抑制することができる。 Therefore, generation | occurrence | production of EMI can be suppressed and the deterioration and malfunction of the display apparatus by EMI generation can be suppressed.
以下、添付図面を参照して本発明の実施形態について本発明の属する技術分野における通常の知識を有する者が容易に実施できるように詳しく説明する。本発明はいろいろな相異なる形態に実現されることができ、ここで説明する実施形態に限られない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily implement the embodiments. The present invention can be implemented in various different forms and is not limited to the embodiments described herein.
添付図面では、表示装置に使用された表示パネルの実施形態として液晶表示パネルを示したが、これは単に本発明を例示するためのものに過ぎず、本発明はこれに限定されるものではない。したがって、表示装置は液晶表示パネル以外の多様な表示パネルを使用することもできる。 In the accompanying drawings, a liquid crystal display panel is shown as an embodiment of a display panel used in a display device, but this is merely for illustrating the present invention, and the present invention is not limited thereto. . Therefore, the display device can use various display panels other than the liquid crystal display panel.
また、添付図面ではエッジ（ｅｄｇｅ）方式のバックライトアセンブリー（ｂａｃｋｌｉｇｈｔ ａｓｓｅｍｂｌｙ）が使用されたが、これは単に本発明を例示するためのものに過ぎず、本発明はこれに限定されるものではない。したがって、エッジ方式以外に直下方式など多様な方式のバックライトアセンブリーにも適用できる。 In addition, although an edge type backlight assembly is used in the accompanying drawings, this is merely for illustrating the present invention, and the present invention is not limited thereto. Absent. Therefore, the present invention can be applied to various types of backlight assemblies other than the edge method.
本発明を明確に説明するために説明上不必要な部分は省略し、明細書全体にわたって同一または類似の構成要素に対しては同一の参照符号を付ける。 In order to clearly describe the present invention, unnecessary portions in the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.
また、いろいろな実施形態において、同一の構成を有する構成要素については同一の符号を用いて代表的に第１実施形態で説明し、その他の実施形態では第１実施形態と異なる構成についてのみ説明する。 Further, in various embodiments, components having the same configuration will be described in the first embodiment using the same reference numerals, and in other embodiments, only configurations different from the first embodiment will be described. .
図１に示したように、本発明の第１実施形態による表示装置１００は、光を供給するバックライトアセンブリー７０と、光の提供を受けて画像を表示する表示パネル５０と、電磁波遮断部材９０とを含む。その他に、表示装置１００は表示パネル５０をバックライトアセンブリー７０の上に固定支持するために固定部材６０をさらに含み、その他の必要な部分をさらに含むことができる。 As shown in FIG. 1, the display device 100 according to the first embodiment of the present invention includes a backlight assembly 70 that supplies light, a display panel 50 that displays an image by receiving light, and an electromagnetic wave shielding member. 90. In addition, the display apparatus 100 may further include a fixing member 60 for fixing and supporting the display panel 50 on the backlight assembly 70, and may further include other necessary parts.
また、表示装置１００は表示パネル５０と電気的に接続されて駆動信号を伝達する複数の駆動集積回路チップパッケージ４１、４２および駆動印刷回路基板４４を含む。ここで、駆動集積回路チップパッケージ４１、４２はチップオンフィルムパッケージ（ｃｈｉｐ ｏｎ ｆｉｌｍ ｐａｃｋａｇｅ、ＣＯＦ）またはテープキャリアパッケージ（ｔａｐｅ ｃａｒｒｉｅｒ ｐａｃｋａｇｅ、ＴＣＰ）で形成される。 The display device 100 includes a plurality of driving integrated circuit chip packages 41 and 42 and a driving printed circuit board 44 that are electrically connected to the display panel 50 and transmit driving signals. Here, the driving integrated circuit chip packages 41 and 42 are formed as a chip-on-film package (COF) or a tape carrier package (TCP).
駆動集積回路チップパッケージはゲート駆動集積回路チップパッケージ４１とデータ駆動集積回路チップパッケージ４２を含む。ゲート駆動集積回路チップパッケージ４１は表示パネル５０の一側周縁に付着されて表示パネル５０にゲート信号を供給する。データ駆動集積回路チップパッケージ４２は前記一側と隣接した表示パネル５０の他側に付着されて表示パネル５０にデータ信号を含んだその他の信号を供給する。 The driving integrated circuit chip package includes a gate driving integrated circuit chip package 41 and a data driving integrated circuit chip package 42. The gate driving integrated circuit chip package 41 is attached to one side edge of the display panel 50 and supplies a gate signal to the display panel 50. The data driving integrated circuit chip package 42 is attached to the other side of the display panel 50 adjacent to the one side, and supplies other signals including data signals to the display panel 50.
表示パネル５０は第１表示板５１および液晶層（図示せず）を介して第１表示板５１と対向配置された第２表示板５３を含む。ここで、第１表示板５１は背面基板になり、第２表示板５３は前面基板になり、第２表示板５３は第１表示板５１よりも大きさが小さい。ここで、駆動集積回路チップパッケージ４１、４２は一側が第２表示板５３と重ならない第１表示板５１の周縁に付着されて表示パネル５０と接続される。そして、駆動集積回路チップパッケージ４１、４２のうちの一つ以上の駆動集積回路チップパッケージは他側が駆動印刷回路基板４４と接続される。 The display panel 50 includes a first display plate 51 and a second display plate 53 disposed to face the first display plate 51 via a liquid crystal layer (not shown). Here, the first display panel 51 is a rear substrate, the second display panel 53 is a front substrate, and the second display panel 53 is smaller in size than the first display panel 51. Here, the driving integrated circuit chip packages 41 and 42 are attached to the peripheral edge of the first display panel 51 that is not overlapped with the second display panel 53 on one side and connected to the display panel 50. One or more of the driving integrated circuit chip packages 41 and 42 are connected to the driving printed circuit board 44 on the other side.
図１では一つの駆動集積回路チップパッケージ４２が駆動印刷回路基板４４と接続されたものを示したが、本発明は必ずしもこれに限定されるものではない。したがって、他の一つの駆動集積回路チップパッケージ４１をまた他の駆動印刷回路基板（図示せず）と接続することもできる。 Although FIG. 1 shows one driving integrated circuit chip package 42 connected to the driving printed circuit board 44, the present invention is not necessarily limited to this. Therefore, the other driving integrated circuit chip package 41 can also be connected to another driving printed circuit board (not shown).
駆動印刷回路基板４４は各種制御信号を生成し、外部から入力されるデジタル形態の信号をデータ駆動集積回路チップパッケージ４２に伝達する。データ駆動集積回路チップパッケージ４２の集積回路チップは駆動印刷回路基板４４から伝達された各種制御信号に基づいてデジタル形態の信号をアナログ形態に変換した後、表示パネル５０に供給して表示パネル５０を駆動させる。 The driving printed circuit board 44 generates various control signals and transmits a digital signal input from the outside to the data driving integrated circuit chip package 42. The integrated circuit chip of the data driving integrated circuit chip package 42 converts a digital signal into an analog signal based on various control signals transmitted from the driving printed circuit board 44, and then supplies the signal to the display panel 50. Drive.
そして、第２表示板５３の前面と第１表示板５１の背面にはそれぞれ偏光板（図示せず）が付着されて、バックライトアセンブリー７０から供給された可視光線を線偏光させる。 A polarizing plate (not shown) is attached to each of the front surface of the second display panel 53 and the back surface of the first display panel 51 to linearly polarize visible light supplied from the backlight assembly 70.
第１表示板５１および第２表示板５３には複数の薄膜トランジスタ（ｔｈｉｎ ｆｉｌｍ ｔｒａｎｓｉｓｔｏｒ、ＴＦＴ）、カラーフィルター、画素電極および共通電極などが形成される。そして、液晶層が画素電極と共通電極の間に配置される。 A plurality of thin film transistors (TFTs), a color filter, a pixel electrode, a common electrode, and the like are formed on the first display panel 51 and the second display panel 53. A liquid crystal layer is disposed between the pixel electrode and the common electrode.
このような構成によって、スイッチング素子の薄膜トランジスタがオンにされると、画素電極と共通電極の間に電界（ｅｌｅｃｔｒｉｃ ｆｉｅｌｄ）が形成される。このような電界によって第１表示板５１と第２表示板５３の間に配置された液晶層の液晶配列角が変化し、これによって変更される光透過度によって所望の画像を得る。 With this configuration, when the thin film transistor of the switching element is turned on, an electric field is formed between the pixel electrode and the common electrode. The liquid crystal alignment angle of the liquid crystal layer disposed between the first display panel 51 and the second display panel 53 is changed by such an electric field, and a desired image is obtained by the light transmittance changed thereby.
バックライトアセンブリー７０は光を発生する光源ユニット７６、光源カバー７８、光学シート類７２、導光板７４、反射部材７９、第１支持部材７１、第２支持部材７３および収納部材７５を含む。そして、バックライトアセンブリー７０は光源ユニット７６を駆動するインバータ回路基板７７（図２に図示）と、光源ユニット７６とインバータ回路基板７７を電気的に接続するワイヤー８５（図２に図示）をさらに含む。 The backlight assembly 70 includes a light source unit 76 that generates light, a light source cover 78, optical sheets 72, a light guide plate 74, a reflection member 79, a first support member 71, a second support member 73, and a storage member 75. The backlight assembly 70 further includes an inverter circuit board 77 (shown in FIG. 2) for driving the light source unit 76, and a wire 85 (shown in FIG. 2) for electrically connecting the light source unit 76 and the inverter circuit board 77. Including.
導光板７４は一つ以上の入射面と、入射面と交差する出射面を含む。図１で導光板７４は二つの入射面を有する。導光板７４は入射面を通じて入射された光を実質的に均一に拡散させて出射面を通じて出射させる。 The light guide plate 74 includes one or more entrance surfaces and an exit surface that intersects the entrance surface. In FIG. 1, the light guide plate 74 has two incident surfaces. The light guide plate 74 diffuses light incident through the incident surface substantially uniformly and emits the light through the output surface.
光源ユニット７６は導光板７４の入射面に光を照射する。また、光源ユニット７６は導光板７４の近くに対向配置される。光源ユニット７６には冷陰極蛍光ランプ（ｃｏｌｄ ｃａｔｈｏｄｅ ｆｌｕｏｒｅｓｃｅｎｔ ｌａｍｐ、ＣＣＦＬ）が使用される。しかし、本発明は必ずしもこれに限定されるものではない。したがって、光源ユニット７６として外部電極蛍光ランプ（ｅｘｔｅｒｎａｌ ｅｌｅｃｔｒｏｄｅ ｆｌｏｕｒｓｃｅｎｔ ｌａｍｐ、ＥＥＦＬ）および熱陰極蛍光ランプ（ｈｏｔ ｃａｔｈｏｄｅ ｆｌｕｏｒｅｓｃｅｎｃｅ ｌａｍｐ、ＨＣＦＬ）等も使用できる。また、光源ユニット７６としてランプ以外にＬＥＤ（Ｌｉｇｈｔ Ｅｍｉｔｔｉｎｇ Ｄｉｏｄｅ）等の発光素子も使用できる。 The light source unit 76 irradiates the incident surface of the light guide plate 74 with light. Further, the light source unit 76 is disposed opposite to the light guide plate 74. The light source unit 76 is a cold cathode fluorescent lamp (CCFL). However, the present invention is not necessarily limited to this. Therefore, an external electrode fluorescent lamp (EEFL), a hot cathode fluorescent lamp (HCFL), or the like can be used as the light source unit 76. In addition to the lamp, a light emitting element such as an LED (Light Emitting Diode) can be used as the light source unit 76.
反射部材７９は導光板７４の出射面に対向する反対面に隣接して配置される。反射部材７９は導光板７４の入射面に入射されて出射面の反対面に向かう光を反射させる。反射部材７９によって反射された光は出射面を通じて出射される。したがって、反射部材７９は光の損失を減らし光の拡散を助けて導光板７４の出射面から出射される光の均一性を向上させる。 The reflection member 79 is disposed adjacent to the opposite surface facing the light exit surface of the light guide plate 74. The reflection member 79 reflects light that is incident on the incident surface of the light guide plate 74 and travels toward the opposite surface of the light exit surface. The light reflected by the reflecting member 79 is emitted through the emission surface. Therefore, the reflecting member 79 reduces the loss of light and helps the diffusion of the light to improve the uniformity of the light emitted from the light exit surface of the light guide plate 74.
光源カバー７８は光源ユニット７６を囲む。光源カバー７８は内側面が反射物質を含んで形成されたり反射コーティング処理されたりする。つまり、光源カバー７８は光源ユニット７６を保護しながら、光源ユニット７６から照射された光が全て導光板７４の入射面に向かうように光を反射させる。 The light source cover 78 surrounds the light source unit 76. The light source cover 78 has an inner surface that includes a reflective material or a reflective coating treatment. That is, the light source cover 78 protects the light source unit 76 and reflects the light so that all the light emitted from the light source unit 76 is directed to the incident surface of the light guide plate 74.
光学シート類７２は導光板７４の出射面から出射された光の輝度特性をさらに向上させる。つまり、光学シート類７２を通過する光はさらに均一に拡散され、明るさも強化される。光学シート類７２は拡散シート、プリズムシート、輝度強化シートおよび保護シートなど多様な機能のシートを含むことができる。 The optical sheets 72 further improve the luminance characteristics of the light emitted from the light exit surface of the light guide plate 74. That is, the light passing through the optical sheets 72 is more evenly diffused and the brightness is enhanced. The optical sheets 72 can include sheets having various functions such as a diffusion sheet, a prism sheet, a brightness enhancement sheet, and a protection sheet.
収納部材７５は導光板７４、光源ユニット７６、光源カバー７８、反射部材７９および光学シート類７２等を収納する。そして、第１支持部材７１は収納部材７５と結合して、収納部材７５に収納された導光板７４、光源ユニット７６、光源カバー７８、反射部材７９および光学シート類７２等を固定する。 The storage member 75 stores the light guide plate 74, the light source unit 76, the light source cover 78, the reflection member 79, the optical sheets 72, and the like. The first support member 71 is coupled to the storage member 75 to fix the light guide plate 74, the light source unit 76, the light source cover 78, the reflection member 79, the optical sheets 72, and the like stored in the storage member 75.
図１では収納部材７５と第１支持部材７１を全て使用するものを示したが、これは単に本発明を例示するためのものに過ぎず、本発明はこれに限定されるものではない。したがって、第１支持部材７１は省略されることもできる。第１支持部材７１が省略された場合には収納部材７５が第１支持部材７１の役割も担う。 Although FIG. 1 shows that the storage member 75 and the first support member 71 are all used, this is merely for illustrating the present invention, and the present invention is not limited to this. Accordingly, the first support member 71 can be omitted. When the first support member 71 is omitted, the storage member 75 also serves as the first support member 71.
第２支持部材７３は収納部材７５の側面と背面の周縁に沿って結合される。第２支持部材７３は収納部材７５の強度を補強して、収納部材７５が任意に曲がったり捩れたりすることを防止する。つまり、第２支持部材７３は収納部材７５が変形されないように保護する。しかし、第２支持部材７３も、第１支持部材７１と同様に、省略されることができる。 The second support member 73 is coupled along the peripheral edge of the side surface and the back surface of the storage member 75. The second support member 73 reinforces the strength of the storage member 75 and prevents the storage member 75 from being arbitrarily bent or twisted. That is, the second support member 73 protects the storage member 75 from being deformed. However, like the first support member 71, the second support member 73 can also be omitted.
また、駆動集積回路チップパッケージ４２は折り曲げられ、駆動印刷回路基板４４は収納部材７５の背面に配置される。そして、表示装置１００は、収納部材７５と結合して駆動印刷回路基板４４をカバーする基板カバー４８をさらに含む。 Further, the driving integrated circuit chip package 42 is bent, and the driving printed circuit board 44 is disposed on the back surface of the housing member 75. The display apparatus 100 further includes a substrate cover 48 that is coupled to the storage member 75 and covers the driving printed circuit board 44.
電磁波遮断部材９０は収納部材７５の背面と駆動印刷回路基板４４の間に配置される。また、電磁波遮断部材９０は基板カバー４８で駆動印刷回路基板４４と対向する面にも配置される。 The electromagnetic wave shielding member 90 is disposed between the back surface of the housing member 75 and the drive printed circuit board 44. The electromagnetic wave shielding member 90 is also disposed on the surface of the substrate cover 48 that faces the drive printed circuit board 44.
図２に示したように、インバータ回路基板は７７収納部材７５の背面に設けられる。インバータ回路基板７７は外部電力を一定の電圧レベルに変圧した後、光源ユニット７６に印加することによって光源ユニット７６を駆動する。インバータ回路基板７７はワイヤー８５によって光源ユニット７６と電気的に接続される。 As shown in FIG. 2, the inverter circuit board is provided on the back surface of the 77 housing member 75. The inverter circuit board 77 drives the light source unit 76 by applying external power to the light source unit 76 after transforming external power to a certain voltage level. The inverter circuit board 77 is electrically connected to the light source unit 76 by a wire 85.
また、収納部材７５の背面には制御回路基板４５がさらに設けられる。制御回路基板４５は駆動印刷回路基板４４と電気的に接続され、表示パネル５０に画像を表示するために必要な信号を駆動印刷回路基板４４に供給する。しかし、これは単に本発明を例示するためのものに過ぎず、本発明は必ずしもこれに限定されるものではない。したがって、制御回路基板４５は省略でき、駆動印刷回路基板４４に制御回路が共に形成できる。 A control circuit board 45 is further provided on the back surface of the storage member 75. The control circuit board 45 is electrically connected to the driving printed circuit board 44, and supplies a signal necessary for displaying an image on the display panel 50 to the driving printed circuit board 44. However, this is merely for illustrating the present invention, and the present invention is not necessarily limited thereto. Therefore, the control circuit board 45 can be omitted, and the control circuit can be formed on the drive printed circuit board 44 together.
また、図２では基板カバー４８が駆動印刷回路基板４４のみをカバーするものを示したが、本発明はこれに限定されるものではない。したがって、インバータ回路基板７７および制御回路基板４５をそれぞれカバーする追加の基板カバー（図示せず）をさらに含むこともできる。 2 shows that the substrate cover 48 covers only the driving printed circuit board 44, the present invention is not limited to this. Accordingly, an additional board cover (not shown) that covers the inverter circuit board 77 and the control circuit board 45 may be further included.
そして、電磁波遮断部材９０もインバータ回路基板７７と収納部材７５の背面の間および制御回路基板４５と収納部材７５の背面との間にそれぞれ追加的に配置できる。また、表示装置１００がインバータ回路基板７７および制御回路基板４５を覆う追加の基板カバー（図示せず）を含む場合に、電磁波遮断部材９０は追加の基板カバー（図示せず）でそれぞれインバータ回路基板７７および制御回路基板４５と対向する面にも追加的に配置される。 The electromagnetic wave shielding member 90 can be additionally disposed between the inverter circuit board 77 and the back surface of the storage member 75 and between the control circuit board 45 and the back surface of the storage member 75. When the display device 100 includes an additional board cover (not shown) that covers the inverter circuit board 77 and the control circuit board 45, the electromagnetic wave shielding member 90 is an inverter circuit board using the additional board cover (not shown). 77 and the surface facing the control circuit board 45 are additionally arranged.
つまり、電磁波遮断部材９０は駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５を含む印刷回路基板のように電磁波を発生させる部品を囲むように配置される。 That is, the electromagnetic wave shielding member 90 is disposed so as to surround a component that generates electromagnetic waves, such as a printed circuit board including the drive printed circuit board 44, the inverter circuit board 77, and the control circuit board 45.
図３は電磁波遮断部材９０の駆動印刷回路基板４４と対向する面を拡大して示した図面である。図３に示したように、電磁波遮断部材９０は複数の突起９１を含む。複数の突起９１は駆動印刷回路基板４４の方向に突出される。複数の突起９１は三角錐および四角錐などのような多角錐形状を含む。つまり、複数の突起９１は縦断面が三角形の形状を含む。 FIG. 3 is an enlarged view showing a surface of the electromagnetic wave shielding member 90 facing the drive printed circuit board 44. As shown in FIG. 3, the electromagnetic wave shielding member 90 includes a plurality of protrusions 91. The plurality of protrusions 91 protrude in the direction of the drive printed circuit board 44. The plurality of protrusions 91 include a polygonal pyramid shape such as a triangular pyramid and a quadrangular pyramid. That is, the plurality of protrusions 91 includes a triangular shape in the longitudinal section.
また、電磁波遮断部材９０は一つの突起９１が０．１μｍ〜１０００μｍ範囲内の平均幅を有する。複数の突起９１は０．１μｍ〜１０００μｍ範囲内の平均幅を有することによって、表示装置１００の品質の低下を防止しや、誤作動の原因になる高周波領域の電磁波の遮断をさせることができる。突起９１の大きさが０．１μｍより小さかったり１０００μｍより大きかったりすれば、電磁波遮断効果は低下してしまう。ここで、平均幅とは突起９１が有する底面で大小のいろいろな幅の平均値をいう。突起９１が有する底面の形状によって平均幅は平均直径を意味することもある。 The electromagnetic wave shielding member 90 has one protrusion 91 having an average width in the range of 0.1 μm to 1000 μm. Since the plurality of protrusions 91 have an average width in the range of 0.1 μm to 1000 μm, it is possible to prevent deterioration of the quality of the display device 100 and to block electromagnetic waves in a high frequency region that cause malfunction. If the size of the protrusion 91 is smaller than 0.1 μm or larger than 1000 μm, the electromagnetic wave shielding effect is lowered. Here, the average width means an average value of various widths on the bottom surface of the protrusion 91. Depending on the shape of the bottom surface of the protrusion 91, the average width may mean an average diameter.
電磁波遮断部材９０はアロエ（ａｌｏｅ）、木材、金属物質、合成樹脂のうちの一つ以上の素材を含んで形成される。 The electromagnetic wave shielding member 90 includes at least one material selected from aloe, wood, metal, and synthetic resin.
つまり、電磁波遮断部材９０は合成樹脂を使用して、一側面に複数の突起９１が形成されたフィルム形態に形成される。また、電磁波遮断部材９０はアロエ物質を固着または硬化させて形成することもできる。また、木材で形成されたプレートの一側面を加工して、複数の突起９１が形成された電磁波遮断部材９０を形成することもできる。 That is, the electromagnetic wave shielding member 90 is formed in a film form in which a plurality of protrusions 91 are formed on one side surface using a synthetic resin. The electromagnetic wave shielding member 90 can also be formed by fixing or curing an aloe substance. Further, an electromagnetic wave shielding member 90 having a plurality of protrusions 91 can be formed by processing one side surface of a plate made of wood.
また、金属物質で形成された金属板の表面を多様な方法で加工して、複数の突起９１が形成された電磁波遮断部材９０を形成することもできる。 In addition, the electromagnetic wave blocking member 90 having the plurality of protrusions 91 may be formed by processing the surface of a metal plate formed of a metal material by various methods.
また、電磁波遮断部材９０は収納部材７５および基板カバー４８と一体に形成されることができる。つまり、収納部材７５で駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５が設けられる面を加工して複数の突起９１を形成し、電磁波遮断部材９０のような役割を果たすようにすることができる。つまり、収納部材７５が直接電磁波遮断部材９０を兼ねることができる。そして音基板カバー４８で駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５に対向する面を加工して複数の突起９１を形成し、電磁波遮断部材９０と同一の役割を果たすようにすることができる。つまり、基板カバー４８が直接電磁波遮断部材９０を兼ねることができる。 Further, the electromagnetic wave shielding member 90 can be formed integrally with the housing member 75 and the substrate cover 48. That is, the surface on which the driving printed circuit board 44, the inverter circuit board 77, and the control circuit board 45 are processed by the storage member 75 is processed to form a plurality of protrusions 91 so as to play a role like the electromagnetic wave shielding member 90. be able to. That is, the storage member 75 can also serve as the electromagnetic wave shielding member 90 directly. Then, the surface facing the drive printed circuit board 44, the inverter circuit board 77, and the control circuit board 45 is processed by the sound board cover 48 to form a plurality of protrusions 91 so as to play the same role as the electromagnetic wave shielding member 90. be able to. That is, the substrate cover 48 can also serve as the electromagnetic wave shielding member 90 directly.
図４に示したように、電磁波遮断部材９０は駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５のような電磁波発生部品で発生した電磁波を反射させて、電磁障害（ＥＬＥＣＴＲＯ−ＭＡＧＮＥＴＩＣ ＩＮＴＥＲＦＥＲＥＮＣＥ、ＥＭＩ）が起こることを抑制する。つまり、ＥＭＩ発生による表示装置１００の品質の低下および誤作動を抑制することができる。 As shown in FIG. 4, the electromagnetic wave shielding member 90 reflects electromagnetic waves generated by electromagnetic wave generating components such as the drive printed circuit board 44, the inverter circuit board 77, and the control circuit board 45, thereby preventing electromagnetic interference (ELECTRO-MAGNETIC INTERFERENCE). EMI) is suppressed. That is, it is possible to suppress deterioration in quality and malfunction of the display device 100 due to generation of EMI.
図４で、実線で表示された矢印は電磁波の一部が電磁波遮断部材９０を透過していく経路を示す。点線で表示された矢印は電磁波の一部が電磁波遮断部材９０に反射される経路を示す。このように、電磁波遮断部材９０は電磁波を反射させてＥＭＩの発生を抑制する。 In FIG. 4, an arrow indicated by a solid line indicates a path through which a part of the electromagnetic wave passes through the electromagnetic wave blocking member 90. Arrows indicated by dotted lines indicate paths through which part of the electromagnetic waves are reflected by the electromagnetic wave shielding member 90. Thus, the electromagnetic wave shielding member 90 reflects electromagnetic waves and suppresses the generation of EMI.
図５は本発明の第２実施形態による電磁波遮断部材９０の突起９２の形状を示す。図５に示したように、電磁波遮断部材９０の突起９２は縦断面が凸多角形を含む。突起９２は同様に０．１μｍ〜１０００μｍ範囲内の平均幅を有する。このような形状の突起９２を有する電磁波遮断部材９０も駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５のような電磁波発生部品で発生した電磁波を反射させて、ＥＭＩが起こることを抑制できる。 FIG. 5 shows the shape of the protrusion 92 of the electromagnetic wave shielding member 90 according to the second embodiment of the present invention. As shown in FIG. 5, the protrusion 92 of the electromagnetic wave shielding member 90 includes a convex polygon in the longitudinal section. The protrusions 92 similarly have an average width in the range of 0.1 μm to 1000 μm. The electromagnetic wave shielding member 90 having the protrusion 92 having such a shape also reflects electromagnetic waves generated by electromagnetic wave generating components such as the drive printed circuit board 44, the inverter circuit board 77, and the control circuit board 45 to suppress the occurrence of EMI. it can.
図６は本発明の第３実施形態による電磁波遮断部材９０の突起９３の形状を示す。図６に示したように、電磁波遮断部材９０の突起９３は縦断面が凹多角形を含む。突起９３は同様に０．１μｍ〜１０００μｍ範囲内の平均幅を有する。このような形状の突起９３を有する電磁波遮断部材９０も駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５のような電磁波発生部品で発生した電磁波を反射させて、ＥＭＩが起こることを抑制できる。 FIG. 6 shows the shape of the protrusion 93 of the electromagnetic wave shielding member 90 according to the third embodiment of the present invention. As shown in FIG. 6, the protrusion 93 of the electromagnetic wave shielding member 90 includes a concave polygon in the longitudinal section. The protrusions 93 similarly have an average width in the range of 0.1 μm to 1000 μm. The electromagnetic wave shielding member 90 having the projection 93 having such a shape also suppresses the occurrence of EMI by reflecting electromagnetic waves generated by electromagnetic wave generating components such as the drive printed circuit board 44, the inverter circuit board 77, and the control circuit board 45. it can.
図７は本発明の第４実施形態による電磁波遮断部材９０の突起９４の形状を示す。図７に示したように、電磁波遮断部材９０の突起９４は縦断面がアーチ（ａｒｃｈ）形状を含む。突起９４は同様に０．１μｍ〜１０００μｍ範囲内の平均幅を有する。このような形状の突起９４を有する電磁波遮断部材９０も駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５のような電磁波発生部品で発生した電磁波を反射させて、ＥＭＩが起こることを抑制できる。 FIG. 7 shows the shape of the protrusion 94 of the electromagnetic wave shielding member 90 according to the fourth embodiment of the present invention. As shown in FIG. 7, the protrusion 94 of the electromagnetic wave shielding member 90 includes an arch shape in the longitudinal section. The protrusions 94 similarly have an average width in the range of 0.1 μm to 1000 μm. The electromagnetic wave shielding member 90 having the projection 94 having such a shape also reflects electromagnetic waves generated by electromagnetic wave generating components such as the drive printed circuit board 44, the inverter circuit board 77, and the control circuit board 45, thereby suppressing the occurrence of EMI. it can.
図８は本発明の第５実施形態による電磁波遮断部材９０の突起９７の形状を示す。図８に示したように、電磁波遮断部材９０の突起９７はプリズム（ｐｒｉｓｍ）形状、即ち、横になった三角柱形状を含む。ここで、プリズム形状の突起９７は０．１μｍ〜１０００μｍ範囲内の幅を有する。このような形状の突起９７を有する電磁波遮断部材９０も駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５のような電磁波発生部品で発生した電磁波を反射させて、ＥＭＩが起こることを抑制できる。 FIG. 8 shows the shape of the protrusion 97 of the electromagnetic wave shielding member 90 according to the fifth embodiment of the present invention. As shown in FIG. 8, the protrusion 97 of the electromagnetic wave shielding member 90 includes a prism shape, that is, a lying triangular prism shape. Here, the prism-shaped protrusion 97 has a width in the range of 0.1 μm to 1000 μm. The electromagnetic wave shielding member 90 having the projection 97 having such a shape also reflects electromagnetic waves generated by electromagnetic wave generating components such as the drive printed circuit board 44, the inverter circuit board 77, and the control circuit board 45, thereby suppressing the occurrence of EMI. it can.
また、プリズム形状の突起９７も必ずしも断面が三角形に限定されるものではなく、凸多角形、凹多角形およびアーチ形状の断面を有することもできる。 Also, the prism-shaped protrusion 97 is not necessarily limited to a triangular cross section, and may have a convex polygon, a concave polygon, and an arch-shaped cross section.
図９は本発明の第６実施形態による電磁波遮断部材９０の突起９８の形状を示す。図９に示したように、電磁波遮断部材９０の突起９８は半球形状を含む。突起９８は同様に０．１μｍ〜１０００μｍ範囲内の平均幅、即ち、直径を有する。このような形状の突起９８を有する電磁波遮断部材９０も駆動印刷回路基板４４、インバータ回路基板７７および制御回路基板４５のような電磁波発生部品で発生した電磁波を反射させて、ＥＭＩが起こることを抑制できる。 FIG. 9 shows the shape of the protrusion 98 of the electromagnetic wave shielding member 90 according to the sixth embodiment of the present invention. As shown in FIG. 9, the protrusion 98 of the electromagnetic wave shielding member 90 includes a hemispherical shape. The protrusion 98 similarly has an average width, i.e., diameter, in the range of 0.1 [mu] m to 1000 [mu] m. The electromagnetic wave shielding member 90 having the protrusion 98 having such a shape also reflects electromagnetic waves generated by electromagnetic wave generating components such as the drive printed circuit board 44, the inverter circuit board 77, and the control circuit board 45, thereby suppressing the occurrence of EMI. it can.
以下、実験例を通して本発明をより詳細に説明する。 Hereinafter, the present invention will be described in more detail through experimental examples.
このような実験例は単に本発明を例示するためのものに過ぎず、本発明はこれに限定されるものではない。
実験例
本発明の第１実施形態による電磁波遮断部材９０を用いた表示装置１００でＥＭＩの発生程度を測定した。図１０は実験例でＥＭＩに影響を与える周波数分布を測定して示すグラフである。
比較例
従来の表示装置、つまり、本発明による電磁波遮断部材９０を使用しない表示装置でＥＭＩの発生程度を測定した。図１１は比較例でＥＭＩに影響を与える周波数分布を測定して示すグラフである。
Such experimental examples are merely for illustrating the present invention, and the present invention is not limited thereto.
Experimental Example The generation degree of EMI was measured with the display device 100 using the electromagnetic wave shielding member 90 according to the first embodiment of the present invention. FIG. 10 is a graph showing a measured frequency distribution affecting EMI in an experimental example.
Comparative Example The degree of occurrence of EMI was measured with a conventional display device, that is, a display device not using the electromagnetic wave shielding member 90 according to the present invention. FIG. 11 is a graph showing a measured frequency distribution affecting EMI in a comparative example.
図１０および図１１のグラフを比較して見てみると、実験例で表示装置１００の品質を低下させたり誤作動を誘発させたりする特定高周波領域でＥＭＩに影響を与える周波数が緩和されていることが分かる。つまり、図１０のＲ領域と図１１のＨ領域を比較してみれば、Ｈ領域に比べてＲ領域の周波数が平均的に低いだけでなく、急ピッチを有して飛ぶ周波数も非常に減っていることが分かる。 When comparing the graphs of FIG. 10 and FIG. 11, the frequency affecting the EMI is relaxed in a specific high frequency region where the quality of the display device 100 is deteriorated or a malfunction is induced in the experimental example. I understand that. In other words, comparing the R region of FIG. 10 and the H region of FIG. 11, not only the frequency of the R region is lower on average than the H region, but also the frequency of flying with a steep pitch is greatly reduced. I understand that
前述の通り本発明を説明したが、特許請求の範囲の概念と範囲を逸脱しない限り、多様な修正および変形が可能であることは、本発明の属する技術分野に属する者であれは容易に理解できる。 Although the present invention has been described as described above, various modifications and variations can be easily made by those skilled in the art to which the present invention belongs without departing from the concept and scope of the claims. it can.
本発明は電磁波を発生する表示装置に対して利用することができる。 The present invention can be used for a display device that generates electromagnetic waves.
４１、４２ 駆動集積回路チップパッケージ、
４４ 駆動印刷回路基板、
４５ 制御回路基板、
４８ カバー部材、
５０ 表示パネル、
５１ 第１表示板、
５３ 第２表示板、
６０ 固定部材、
７０ バックライトアセンブリー、
７１ 第１支持部材、
７２ 光学シート類、
７３ 第２支持部材、
７４ 導光板、
７５ 収納部材、
７６ 光源ユニット、
７７ インバータ回路基板、
７８ 光源カバー、
７９ 反射シート、
８５ ワイヤー、
９０ 電磁波遮断部材、
９１ 突起。
41, 42 Drive integrated circuit chip package,
44 drive printed circuit board,
45 Control circuit board,
48 cover member,
50 display panel,
51 1st display board,
53 2nd display board,
60 fixing member,
70 backlight assembly,
71 a first support member,
72 Optical sheets,
73 a second support member,
74 light guide plate,
75 storage members,
76 light source unit,
77 Inverter circuit board,
78 Light source cover,
79 Reflective sheet,
85 wires,
90 electromagnetic wave shielding member,
91 Protrusion.
Claims (16)
前記表示パネルを収納する収納部材と、
前記収納部材の背面に設けられた一つ以上の印刷回路基板と、
前記収納部材の背面と前記印刷回路基板との間に配置された電磁波遮断部材とを含み、
前記電磁波遮断部材は電磁波を遮断させるための複数の突起を含むことを特徴とする表示装置。 A display panel for displaying images,
A storage member for storing the display panel;
One or more printed circuit boards provided on the back surface of the storage member;
Including an electromagnetic wave shielding member disposed between the back surface of the housing member and the printed circuit board,
The display device according to claim 1, wherein the electromagnetic wave blocking member includes a plurality of protrusions for blocking electromagnetic waves.
前記印刷回路基板は、前記光源ユニットを駆動するインバータ回路基板をさらに含むことを特徴とする請求項１に記載の表示装置。 A light source unit that is housed in the housing member and supplies light to the display panel;
The display device according to claim 1, wherein the printed circuit board further includes an inverter circuit board that drives the light source unit.
前記基板カバーで前記印刷回路基板と対向する面に配置された電磁波遮断部材をさらに含むことを特徴とする請求項１に記載の表示装置。 A board cover that covers the printed circuit board in combination with the housing member;
The display device according to claim 1, further comprising an electromagnetic wave shielding member disposed on a surface of the substrate cover facing the printed circuit board.
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| KR1020060125767A KR101329280B1 (en) | 2006-12-11 | 2006-12-11 | Display device |
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| EP (1) | EP1933190A3 (en) |
| JP (1) | JP2008146012A (en) |
| KR (1) | KR101329280B1 (en) |
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| KR101621794B1 (en) * | 2010-01-07 | 2016-05-31 | 삼성전자 주식회사 | Display apparatus |
| TWI471086B (en) * | 2011-03-14 | 2015-01-21 | E Ink Holdings Inc | A method for forming an emi shielding layer on an electronic paper display |
| US8488335B2 (en) * | 2011-04-18 | 2013-07-16 | Japan Display West, Inc. | Electro-optical device and electronic apparatus |
| KR20130040661A (en) * | 2011-10-14 | 2013-04-24 | 삼성전자주식회사 | Back light unit and display device having the same |
| KR20130072608A (en) * | 2011-12-22 | 2013-07-02 | 삼성전자주식회사 | Display apparatus |
| JP6094232B2 (en) * | 2013-01-23 | 2017-03-15 | 株式会社デンソー | Display device |
| TWI494646B (en) * | 2013-01-25 | 2015-08-01 | Au Optronics Corp | Panel module |
| CN103631039B (en) * | 2013-11-29 | 2016-04-20 | 南京中电熊猫液晶显示科技有限公司 | A kind of integral type liquid crystal display and manufacture method thereof |
| KR102120072B1 (en) | 2018-09-28 | 2020-06-08 | 세종대학교산학협력단 | Method for preparing cathode active material for potassium ion secondary battery, positive electrode prepared thereby and potassium ion secondary battery containing the same |
| KR102568677B1 (en) | 2021-02-01 | 2023-08-18 | 세종대학교산학협력단 | Positive active material for potassium ion secondary battery, preparation method therof, and potassium ion secondary battery comprising the same |
Family Cites Families (17)
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| US5422751A (en) | 1992-10-14 | 1995-06-06 | Apple Computer, Inc. | Liquid crystal display assembly employing front bezel, frame holding liquid crystal cell attached to bezel, and light source and back plate attached to bezel |
| KR20000005799U (en) | 1998-09-03 | 2000-04-06 | 김영환 | Electromagnetic shielding structure of liquid crystal display |
| KR100319199B1 (en) * | 1998-09-24 | 2002-10-25 | 삼성전자 주식회사 | LCD Display |
| JP2000181362A (en) * | 1998-12-17 | 2000-06-30 | Alps Electric Co Ltd | Liquid crystal display device |
| JP2000315884A (en) | 1999-04-28 | 2000-11-14 | Mitsubishi Electric Corp | Electromagnetic wave conduction member and liquid crystal display using the same |
| KR100873496B1 (en) * | 2002-05-13 | 2008-12-15 | 삼성전자주식회사 | Liquid crystal display |
| TW200405790A (en) * | 2002-08-08 | 2004-04-01 | Dainippon Printing Co Ltd | Electromagnetic wave shielding sheet |
| KR100570973B1 (en) * | 2003-05-02 | 2006-04-13 | 삼성에스디아이 주식회사 | FPD with light-shielding substrate and methode for fabricating the same |
| KR20040103673A (en) * | 2003-06-02 | 2004-12-09 | 삼성전자주식회사 | Flat panel display device |
| JP3731592B2 (en) * | 2003-09-08 | 2006-01-05 | セイコーエプソン株式会社 | Transmission screen member, transmission screen and rear projector |
| KR100647584B1 (en) * | 2003-10-09 | 2006-11-17 | 삼성에스디아이 주식회사 | Plasma display panel and plasma display device having the same |
| US7457120B2 (en) * | 2004-04-29 | 2008-11-25 | Samsung Sdi Co., Ltd. | Plasma display apparatus |
| KR20060055107A (en) | 2004-11-18 | 2006-05-23 | 삼성에스디아이 주식회사 | Plasma display apparatus |
| KR100717784B1 (en) * | 2005-02-24 | 2007-05-11 | 삼성에스디아이 주식회사 | Plasma display device |
| JP2006286938A (en) * | 2005-03-31 | 2006-10-19 | Kyoto Univ | Member and device for electromagnetic wave shielding |
| US7755263B2 (en) * | 2005-05-04 | 2010-07-13 | Samsung Corning Precision Glass Co., Ltd. | External light-shielding layer, filter for display device including the external light-shielding layer and display device including the filter |
| KR100696832B1 (en) * | 2005-08-30 | 2007-03-19 | 삼성에스디아이 주식회사 | Plasma display module |
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| US7911807B2 (en) | 2011-03-22 |
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| CN101201475A (en) | 2008-06-18 |
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